Water Systems on Earth - Section 11.1 Quiz

Wide, flat areas between trenches and mid-oceans ridges are called
1. abyssal plains.
2. seamounts.
3. continental shelves.
4. continental slopes.
Which of the following is not a major ocean?
1. African
2. Indian
3. Pacific
4. Arctic
Which of the following is the smallest ocean?
1. Arctic
2. Indian
3. Southern
4. Atlantic
The origin of ocean water on Earth can be mainly attributed to
1. comets striking Earth, and water vapour released from volcanoes.
2. meteors and melting glaciers.
3. nuclear reactions in the sun.
4. gravitational shifting of molten rock.
Old inactive volcanoes that originally developed near a mid-ocean ridge are known as
1. seamounts.
2. ridges.
3. continental slopes.
4. tectonic mounts.
Which tectonic plate is being subducted under Vancouver Island?
1. Juan de Fuca plate
2. North American Plate
3. Pacific Plate
4. South American Plate
The Mid-Atlantic Ridge is formed the moving apart of which two plates?
1. South American and African
2. African and Indian
3. Atlantic and African
4. North American and Indian
Which of the following statements regarding ocean trenches and ridges is not true?
1. Trenches usually develop in the middle of ocean basins.
2. Ocean ridges can be as high as 3 km.
3. A trench is formed at an area of subduction.
4. The newest rock on the planet is found at mid-ocean ridges.
Which of the following statements regarding tectonic plates is not true?
1. Tectonic plates float on a layer of superheated water.
2. There are two types of tectonic plates: oceanic and continental.
3. Pressure from magma can force tectonic plates apart.
4. Tectonic plates move about as fast as your fingernails grow.
A collapsing continental rise will create a
1. turbidity current.
2. earthquake.
3. volcano.
4. ocean ridge.